var num = 7;
var num2 = 12;
var f = false;
var b = new Array;
var b2 = new Array;

function prel(){
	
	if(document.images) {
		for(i=1;i<=num;i++){
		  str = 'buttons/b' + i + '_o.jpg';
		  b[i-1] = new Image();
		  b[i-1].src = str;
		  }
		f = true;
 	}
	if(document.images) {
		for(i=1;i<=num2;i++){
		  str = 'buttons/b' + i + '_o.gif';
		  b2[i-1] = new Image();
		  b2[i-1].src = str;
		  }
		f = true;
 	}
}

function on(im){
	if (document.images && (f == true)) {document.images[im].src="buttons/"+im+"_o.gif";}
}

function off(im){
	if (document.images && (f == true)) {document.images[im].src = "buttons/"+im+".gif";}
}

function show(id) {
	document.getElementById(id + '_out').style.display = "none";
	document.getElementById(id + '_over').style.display = "block";
}
function hide(id) {
	document.getElementById(id + '_over').style.display = "none";
	document.getElementById(id + '_out').style.display = "block";
}

function changeImage(id, img){
	var im = document.getElementById(id);
	im.src = img;
}

var wndPopUpImg = null;
function  showFullSizeImg(path, w, h){
	try{
		wndPopUpImg.close();
	}
	catch(e){}
	wndPopUpImg = window.open(path, 'Picture', 'location=0,scrollbars=0,resizable=1,width=' + (w +20) + ',height=' + (h + 30))
}

var wndDirections = null;
function showDirections(){
	try{
		wndDirections.close();
	}
	catch(e){}
	wndDirections = window.open('http://www.smythmedia.com/map.html', 'Directions', 'location=0,scrollbars=0,resizable=1,width=637,height=542');
}